anaphylaxis mastocytosis an anticoagulant therapy immunocompromised capillary leak syndrome major venous and/or arterial thrombosis thrombocytopenia prothrombotic immune thrombocytopenia Vaccine-induced prothrombotic immune thrombocytopenia vaccine-induced immune thrombotic thrombocytopenia cerebral venous sinus thrombosis heparin-induced thrombocytopenia abdominal veins (splanchnic veins) splanchnic venous thrombosis para-umbilical splenic inferior mesenteric superior mesenteric major duodenal papilla duodenum jejunum ileum cecum antiphospholipid syndrome Comirnaty AstraZeneca thrombocytopenia syndrome